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Twincharged
A twincharger refers to a compound forced induction system used on some internal combustion engines. It is a combination of an exhaust-driven turbocharger and a mechanically driven supercharger, each mitigating the weaknesses of the other. Twincharging does not refer to a twin-turbo arrangement, but to a setup where two different types of compressors are used (instead of only turbochargers). Overview and advantages A mechanically driven supercharger offers exceptional response and low-rpm performance, as it does not rely on pressurization of the exhaust manifold (assuming that it is a positive-displacement design, such as a Roots-type or twin-screw, as opposed to a centrifugal supercharger, which does not provide substantial boost in the lower rpm range), but is less efficient than a turbocharger due to increased parasitic load. A turbocharger sized to move a large volume of air tends to respond slowly to throttle input, while a smaller, more responsive turbocharger may fail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group B
Group B was a set of regulations for grand touring (GT) vehicles used in sports car racing and rallying introduced in 1982 by the Fédération Internationale de l'Automobile (FIA). Although permitted to enter a GT class of the World Sportscar Championship alongside the more popular racing prototypes of Group C, Group B are commonly associated with the international rallying scene during 1982 to 1986 in popular culture, when they were the highest class used across rallying, including the World Rally Championship, regional and national championships. The Group B regulations fostered some of the fastest, most powerful, and most sophisticated rally cars ever built and their era is commonly referred to as the golden era of rallying.''Top Gear'' websiteThe corner that killed Group B However, a series of major accidents, some fatal, were blamed on their outright speed with lack of crowd control at events. After the death of Henri Toivonen and his co-driver Sergio Cresto in the 1986 To ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forced Induction
In an internal combustion engine, forced induction is where turbocharging or supercharging is used to increase the density of the intake air. Engines without forced induction are classified as naturally aspirated. Operating principle Overview Forced induction is often used to increase the power output of an engine. This is achieved by compressing the intake air, to increase the mass of the air-fuel mixture present within the combustion chamber. A naturally aspirated engine is limited to a maximum intake air pressure equal to its surrounding atmosphere; however a forced induction engine produces "boost", whereby the air pressure is higher than the surrounding atmosphere. Since the density of air increases with pressure, this allows a greater mass of air to enter the combustion chamber. Theoretically, the vapour power cycle analysis of the second law of thermodynamics would suggest that increasing the mean effective pressure within the combustion chamber would also increase ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Efficiency
In thermodynamics, the thermal efficiency (\eta_) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc. For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the ''coefficient of performance'') is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work). The efficiency of a heat engine is fractional as the output is always less than the input while the COP of a heat pump is more than 1. These values are further restricted by the Carnot theorem. Overview In general, energy conversion efficiency is the ratio between the useful output of a device and the input, in energy terms. For thermal efficiency, the input, Q_, to the device is heat, or the heat-content of a fuel that is consumed. The des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mini Hatch
The Mini Hatch, stylised as MINI Hatch (or MINI Hardtop in the U.S.), also sold as Mini Cooper, Mini One, or simply called the (BMW) Mini, are a family of retro-styled two-door supermini hatchback and convertible; and (from 2014) a longer, subcompact 4/5-door hatchback. They were introduced in early 2000 by German automaker BMW under the 'Mini' brand. The second generation was launched in 2006 and the third, adding a longer 4/5-door hatchback, in 2014. A two-door convertible version was added in 2004, followed by its second generation in 2008. BMW unveiled their Mini hatch concept at the 1997 Frankfurt International Motor Show, when the Mini marque was still part of the Rover Group, owned by BMW. The styling of the concept-car, intended to replace the original Mini, was well received by the public and further developed. The new Mini (Hatch) was launched by BMW in 2001, one year after their sale of the Rover Group in March 2000, and the classic Mini's discontinuation t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subaru Impreza WRX
The is a compact car that has been manufactured by the Japanese automaker Subaru since 1992. It was introduced as a replacement for the Leone, with the predecessor's EA series engines replaced by the new EJ series. It is now in its sixth generation. Subaru has offered a 5-door hatchback body variant since 2008. The firm also offered a coupé from 1995 until 2001, a 4-door sedan up to the fifth generation and a 5-door wagon from the Impreza's introduction - this was replaced by a hatchback with the third generation in 2008. Mainstream versions have received "boxer" flat-four engines ranging from 1.5- to 2.5-liters, with the performance-oriented Impreza WRX and WRX STI models upgraded with the addition of turbochargers. Since the third generation series, some markets have adopted the abbreviated Subaru WRX name for these high-performance variants. The first three generations of Impreza were also available with an off-road appearance package called the Outback Sport, exclusive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aftermarket (automotive)
The automotive aftermarket is the secondary market of the automotive industry, concerned with the manufacturing, remanufacturing, distribution, retailing, and installation of all vehicle parts, chemicals, equipment, and accessories, ''after'' the sale of the automobile by the original equipment manufacturer (OEM) to the consumer. The parts, accessories, etc. for sale may or may not be manufactured by the OEM. According to a report by the International Trade Administration in the US Department of Commerce, "''Aftermarket parts are divided into two categories: replacement parts and accessories. Replacement parts are automotive parts built or remanufactured to replace OE parts as they become worn or damaged. Accessories are parts made for comfort, convenience, performance, safety, or customization, and are designed for add-on after the original sale of the motor vehicle.''" The aftermarket encompasses parts for replacement, collision, appearance, and performance. The aftermarket prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nissan March
The Nissan Micra, also known as the , is a supermini car (B-segment) that has been produced by the Japanese automobile manufacturer Nissan since 1982. The Nissan Micra replaced the Japanese-market Nissan Cherry. It was exclusive to Nissan Japanese dealership network '' Nissan Cherry Store'' until 1999 when the "Cherry" network was combined into Nissan Red Stage until 2003. Until Nissan began selling kei cars in Japan, the March was Nissan's smallest vehicle, and was not renamed and sold at other Japanese Nissan dealership networks. First generation (K10; 1982) The original Micra (chassis name K10) was introduced onto the Japanese market in October 1982 as a challenger to the Honda City, Daihatsu Charade, Suzuki Cultus, and Toyota Starlet. It was intended to replace the Nissan Cherry as the company's competitor in the supermini sector, as the Cherry model sold in Europe had progressively become larger with each successive generation. In Japan, it was exclusive to '' Nissan C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nissan
, trade name, trading as Nissan Motor Corporation and often shortened to Nissan, is a Japanese multinational corporation, multinational Automotive industry, automobile manufacturer headquartered in Nishi-ku, Yokohama, Japan. The company sells its vehicles under the Nissan, Infiniti, and Datsun brands, with in-house performance tuning products (including cars) labelled Nismo. The company traces back to the beginnings of the 20th century, with the Nissan ''zaibatsu'', now called Nissan Group. Since 1999, Nissan has been part of the Renault–Nissan–Mitsubishi Alliance (Mitsubishi joining in 2016), a partnership between Nissan and Mitsubishi Motors of Japan, with Renault of France. , Renault holds a 43.4% voting stake in Nissan, while Nissan holds a 15% non-voting stake in Renault. Since October 2016 Nissan has held a 34% controlling stake in Mitsubishi Motors. In 2013, Nissan was the sixth largest automaker in the world, after Toyota, General Motors, Volkswagen Group, Hyundai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Street-legal Vehicle
Street-legal, road-legal, or road-going, refers to a vehicle such as a car, motorcycle, or light truck that is equipped and licensed for use on public roads, being therefore roadworthy. This will require specific configurations of lighting, signal lights, and safety equipment. Some specialty vehicles that will not be operated on roads, therefore, do not need all the features of a street-legal vehicle; examples are a vehicle used only off-road (such as a sandrail) that is trailered to its off-road operating area, and a racing car that is used only on closed race tracks and therefore does not need all the features of a street-legal vehicle. As well as motor vehicles, the street-legal distinction applies in some jurisdictions to track bicycles that lack street-legal brakes and lights. Street-legality rules can even affect racing helmets, which possess visual fields too narrow for use on an open road without the risk of missing a fast-moving vehicle. Canada In Canada, all ten pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rally Car
Rally is a wide-ranging form of motorsport with various competitive motoring elements such as speed tests (often called ''rally racing),'' navigation tests, or the ability to reach waypoints or a destination at a prescribed time or average speed. Rallies may be short in the form of trials at a single venue, or several thousand miles long in an extreme endurance rally. Depending on the format, rallies may be organised on private or public roads, open or closed to traffic, or off-road in the form of cross country or rally-raid. Competitors can use production vehicles which must be road-legal if being used on open roads or specially built competition vehicles suited to crossing specific terrain. Rallying is typically distinguished from other forms of motorsport by not running directly against other competitors over laps of a circuit, but instead in a point-to-point format in which participants leave at regular intervals from one or more start points. Rally types Road rallies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancia Delta S4
The Lancia Delta S4 is a Group B rally car manufactured by the Italian car company Lancia. The Delta S4 competed in the World Rally Championship in 1985 and 1986, until Group B class was disbanded and the cars were eventually banned from competition completely by European sanctioning body FIA. The car replaced, and was an evolution of the 037. The S4 took full advantage of the Group B regulations, and featured a midship-mounted engine and all-wheel drive for superior traction on loose surfaces. A total of 28 complete chassis were manufactured. Specifications The car's Inline-four engine combined supercharging and turbocharging to reduce turbo lag at low engine speeds (rpm). The engine generated a maximum output of but some sources even claim that the engine was capable of generating . In 1985, when Lancia engineers tested an S4 engine under extreme conditions, it developed around at 5 bars of boost pressure. An engine capacity multiple of 1.4 was applied to forced induction e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancia
Lancia () is an Italian car manufacturer and a subsidiary of FCA Italy S.p.A., which is currently a Stellantis division. The present legal entity of Lancia was formed in January 2007 when its corporate parent reorganised its businesses, but its history is traced back to ''Lancia & C.'', a manufacturing concern founded in 1906 in Torino by Vincenzo Lancia (1881–1937) and Claudio Fogolin. It became part of Fiat in 1969. The brand is known for its strong rallying heritage, and technical innovations such as the unibody chassis of the 1922 Lambda and the five-speed gearbox introduced in the 1948 Ardea. Despite not competing in the World Rally Championship since 1992, Lancia still holds more Manufacturers' Championships than any other brand. Sales of Lancia-branded vehicles declined from over 300,000 annual units sold in 1990 to less than 100,000 by 2010. After corporate parent Fiat acquired a stake in Chrysler in 2009, the Lancia brand portfolio was modified to include rebadge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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